Explaining a car on Instagram: "Follow (us) @ExplainingACar to learn something NEW about vehicles every day 🧠💫 This concept sounds futuristic: a Flat-8 engine powered entirely by springs, with no fuel required. In theory, springs store mechanical energy when compressed and release it to generate motion. But the challenge is that springs don’t create energy—they only store what you put in. That means you’d still need an external way to ‘wind it up.’ So while it’s an interesting idea and could w